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php»ù´¡±Ê¼Ç Arrow difference

/***************************by
garcon1986********************************/
<?php
// -> ÊÇÖ¸¶ÔÏóµÄ·½·¨»òÕßÊôÐÔ
class Cart{
public function add_item($a,$b){
echo $a+$b.'<br>';
}
}
//$cart = new Cart; Á½¾äÒâÒåÏàͬ
$cart = new Cart();
$cart->add_item("10", 1);
// => Êý×éµÄÔªËظ³Öµ
//¼üÖµone¶ÔÓ¦µÄÖµÊÇ1, ¼üÖµtwo¶ÔÓ¦µÄÖµÊÇ2,¼üÖµ¶ÔÓ¦µÄÖµÊÇ3.
$a = array("one"=>1, "two"=>2, "three"=>3);
echo $a["one"].'<br>';
echo $a["two"].'<br>';
echo $a["three"].'<br>';
//$key=>$value Ö¸¼üÖµ¶ÔÓ¦µÄÖµ
foreach($a as $key => $value){
echo "The \$key is: $key, The \$value is: $value<br>";
}
?>


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<?php
$load = sys_getloadavg();
if ($load[0] > 80) ......

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php »ù´¡±Ê¼Ç logic statements

/***************************by
garcon1986********************************/
<?php
//if Óï¾ä
$a = $b = 3;
if($a = $b)
print "a is equal to b<br>";
//else Óï¾ä
if($a < $b){
print "a is smaller than b";
} else {
print "a is not smaller than b<br> ......
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